/* ============ 联系与支持 / contact ============ */

.page-contact {
  --pc-glass: rgba(16, 38, 31, 0.68);
  --pc-line: rgba(58, 74, 87, 0.62);
  --pc-radius: 3px;
  position: relative;
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-contact .pc-wrap {
  width: 100%;
  max-width: var(--w-max);
  margin: 0 auto;
}

.page-contact .pc-band {
  position: relative;
  padding: clamp(46px, 6.4vw, 92px) var(--pad-x);
}

.page-contact .pc-band--tight {
  padding-top: clamp(26px, 4vw, 52px);
}

/* ---------- 文字层级 ---------- */

.page-contact .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-contact .h1 {
  margin: 0 0 24px;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(42px, 8vw, 104px);
  line-height: 0.98;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-contact .h2 {
  margin: 0 0 16px;
  font-family: var(--font-sans);
  font-weight: 250;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.14;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-contact .h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 450;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.page-contact .pc-head {
  max-width: 68ch;
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-contact .pc-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */

.page-contact .pc-hero {
  position: relative;
  padding: clamp(84px, 11vw, 148px) var(--pad-x) clamp(34px, 5vw, 60px);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(11, 27, 43, 0.95), rgba(6, 17, 15, 0) 58%),
    var(--ink);
}

.page-contact .pc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(58, 74, 87, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(58, 74, 87, 0.22) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 82%);
  pointer-events: none;
}

.page-contact .pc-hero__wedge {
  position: absolute;
  top: clamp(60px, 9vw, 130px);
  right: -100px;
  width: min(52vw, 560px);
  height: clamp(200px, 26vw, 340px);
  background: linear-gradient(135deg, rgba(34, 224, 208, 0.16), rgba(11, 27, 43, 0) 62%);
  clip-path: polygon(20% 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-contact .pc-hero .pc-wrap {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 36px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .breadcrumb a {
  display: inline-block;
  padding: 6px 0;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(34, 224, 208, 0.55);
}

.page-contact .pc-crumb-sep {
  color: var(--line);
}

.page-contact .pc-hero .lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.88;
  color: var(--text);
}

.page-contact .pc-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-contact .pc-hero__facts .num {
  margin-right: 6px;
  font-size: 15px;
  color: var(--cyan);
}

/* ---------- 支持状态面板 ---------- */

.page-contact .pc-status {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-contact .pc-shift {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-radius);
  background: var(--pc-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-contact .pc-shift__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .pc-shift__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pc-pulse 1.2s ease-in-out infinite;
}

@keyframes pc-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(34, 224, 208, 0.5);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(34, 224, 208, 0);
  }
}

.page-contact .pc-shift__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-shift__item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-shift__item:first-child {
  border-top: none;
  padding-top: 4px;
}

.page-contact .pc-shift__time {
  padding-top: 2px;
  font-size: 14px;
  color: var(--amber);
}

.page-contact .pc-shift__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 联系入口 ---------- */

.page-contact .pc-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .pc-channel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--pc-line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--pc-radius);
  background: linear-gradient(160deg, rgba(11, 27, 43, 0.92), rgba(6, 17, 15, 0.92));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .pc-channel--amber {
  border-top-color: var(--amber);
}

.page-contact .pc-channel--silver {
  border-top-color: var(--silver);
}

.page-contact .pc-channel:hover,
.page-contact .pc-channel:focus-within {
  transform: translateY(-4px);
  border-color: rgba(34, 224, 208, 0.5);
}

.page-contact .pc-channel__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .pc-channel__value {
  margin: 0;
  font-size: clamp(13.5px, 1.5vw, 16px);
  line-height: 1.5;
  color: var(--white);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-contact .pc-channel__note {
  margin: auto 0 0;
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 提交准备 ---------- */

.page-contact .pc-prepare {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .pc-prepare__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pc-materials {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-materials__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 12px 22px 0;
  border-bottom: 1px solid var(--pc-line);
  transition: background var(--dur) var(--ease);
}

.page-contact .pc-materials__item:hover {
  background: rgba(34, 224, 208, 0.045);
}

.page-contact .pc-materials__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-contact .pc-materials__num::before {
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-contact .pc-materials__body h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 450;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .pc-materials__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--text);
}

/* ---------- 图片 ---------- */

.page-contact .pc-figure {
  margin: 30px 0 0;
}

.page-contact .pc-figure--narrow {
  max-width: 460px;
}

.page-contact .pc-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-radius);
  object-fit: cover;
}

.page-contact .pc-figure .figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

/* ---------- 服务地区 ---------- */

.page-contact .pc-coverage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-radius);
  background: var(--pc-line);
  overflow: hidden;
}

.page-contact .pc-coverage__cell {
  padding: 28px 24px 30px;
  background: var(--ink);
}

.page-contact .pc-coverage__cell--accent {
  background: linear-gradient(150deg, rgba(16, 38, 31, 0.95), rgba(6, 17, 15, 1));
}

.page-contact .pc-coverage__num {
  display: block;
  margin-bottom: 12px;
  font-size: clamp(32px, 4.4vw, 48px);
  font-weight: 300;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .pc-coverage__cell h3 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 450;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-contact .pc-coverage__cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 对接流程 ---------- */

.page-contact .pc-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-contact .pc-flow__step {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-flow__step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 36px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .pc-flow__num {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .pc-flow__step h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 450;
  letter-spacing: 0.03em;
  color: var(--white);
}

.page-contact .pc-flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--text);
}

/* ---------- 站点信息 ---------- */

.page-contact .pc-registry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: clamp(24px, 3.4vw, 40px);
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-radius);
  background: var(--pc-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-contact .pc-registry__list {
  margin: 0;
  padding: 0;
}

.page-contact .pc-registry__list dt {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--pc-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .pc-registry__list dt:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.page-contact .pc-registry__list dd {
  margin: 8px 0 0;
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-contact .pc-registry__lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pc-registry__links {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-registry__links li {
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .pc-registry__links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 14px 4px 14px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-contact .pc-registry__links a::before {
  content: "→";
  margin-right: 10px;
  color: var(--cyan);
  font-family: var(--font-mono);
}

.page-contact .pc-registry__links a:hover,
.page-contact .pc-registry__links a:focus-visible {
  color: var(--white);
  padding-left: 6px;
}

/* ---------- 焦点可见 ---------- */

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 动效降级 ---------- */

.page-contact [data-reveal] {
  opacity: 1;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-contact .pc-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-channel--silver {
    grid-column: 1 / -1;
  }

  .page-contact .pc-materials__item {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-status {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 28px;
    align-items: start;
  }

  .page-contact .pc-channels {
    grid-template-columns: 1fr;
  }

  .page-contact .pc-channel--silver {
    grid-column: auto;
  }

  .page-contact .pc-prepare {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .pc-coverage {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }

  .page-contact .pc-registry {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }
}

@media (min-width: 1120px) {
  .page-contact .pc-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-channel {
    padding: 26px 22px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-shift__dot {
    animation: none;
  }

  .page-contact .pc-channel,
  .page-contact .pc-registry__links a,
  .page-contact .breadcrumb a {
    transition: none;
  }

  .page-contact .pc-channel:hover,
  .page-contact .pc-channel:focus-within {
    transform: none;
  }
}

@media print {
  .page-contact .pc-shift__dot {
    animation: none;
  }

  .page-contact .pc-hero__wedge,
  .page-contact .pc-hero::before {
    display: none;
  }
}